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Some kinds of water pollution, such as algal blooms and plastics that foul rivers, lakes, and marine environments, lie in plain sight. But other contaminants are not so readily apparent, which makes t...
Accelerating Glacial Retreat Threatens Communities, Fresh Drinking Water（图）
mountain glaciers climate change
2007/2/27
16 February 2007,The worldwide retreat of mountain glaciers threatens local communities by endangering a key source of fresh water that comes from glacial runoff, according to researchers at a 15 Febr...